Paper bag.



H. W. STUART.

PAPER BAG.

APPLIOATION FILED DBO. 7. 1908.

Patented Apr. 26, 1910.

wi h1 moe:

Y mediate portion of the outer ba UNITED STATES PATENT OFFICE.

HENRY W. STUART, OLE' FERNBANK, OHIO, ASSIGNOR, IBY`MESNE ASSIGNMENTS,T0 CHARLES E. ROTH, TRUSTEE, 0F CINCINNATI, OHIO.

PAPER BAG.

Specification of Letters Patent.

Patented Apr. 26, 1910.

To all whom 'it may concern:

Be it known that I, HENRY W. STUART, a citizen of the United States,residing at Fernbank, in the county of Hamilton and State of Ohio, haveinvented certain new and useful Improvements in Paper Bags, of which thefollowing is a specification.

My invention relates to an improvement in paper bags of the duplex typein which the innermember consists of paraffin pa er or othermoisture-proof suitable materia The objects of the invention are tosimplify and cheapen the product and at the same time to improve andstrengthen the bag structurally.

TheV features of the invention are more fully set forth in thedescription of the accompanying drawings, forming a part of thisspecification, in which Figure 1 is a plan view of the outer blank. Fig.2 is a plan view of the inner member, partly formed. Fig. 3 is a planview showmg the relative positions of the inner member'and the outerblank and method of applyln glue for sealing the bottom. Fig. 4 1s a pan view of the com leted article with a portion of the outer b ankthrown back. Fig. 5 is a cross section through the bottom of the doublebag, showing the formation at this point. Fig. 6 is a View similar toFig. 3, showing a modification. Fig. 7 is a section through the bottomof the modification of Fig. 6.

This bag is formed of an outer member consisting of a blank folded u onitself to form a bottom along the line o folding, the meeting side edgesof the folded sections being secured together in any suitable manner;and an inner member consisting of a strip of paper or a blank foldedupon itself in lines transverse to the line of folding of the outermember, so that the inner bag has two folding lines corresponding inosition to the side seams of the outer bag, w ile the meeting ends ofthe inner blank are secured together upon a line adjacent to an inter-Thus it will be seen that the" lateral or si e seams of the outer andthe inner bag are parallel, but the seams of the outer bag are adjacentto an integral portion of the inner ba and the single seam of the innerbag is a jacent to an integral portion of the outer bag. This is toprevent the bag from having comcident seams along the sides. The outerblank consists of a side l, havin laterally extended flaps 2,constituting olding and gluing ed es, and the opposin side 3 forming anen wise extension of t e side 1 and separated by the intermediatefoldingl line 4. The sides 1 and 3 are of the same dimensions so thatwhen the piece 3 is folded upon the piece 1, the flaps 2 ma be foldedover and secured tothe mar ina side surfaces of the piece 3, as indicatein Fig. 4.

T e inner member 10 which is of suitable moisture-proof material,consists of a strip of paper, the opposite ends 6, 7, of which, arefolded inwardly and brought together substantially along the medialllongitudinal line of the receptacle to be formed; they are overla pedand secured by the glue 4, indicated 1n Fig. 2. Preferably, this innermember has at one end, an extended flap 5 adapted to be folded over thesections 6 7, of the inner member 10, see Figs. 2 and 5. If desiredhowever, the flap 5 may be omitted, as indicated in Figs. 6 and 7, inwhich case the inner member is bottomless, the bottom being formed bythe folding over of the outer bag member 3, see Fig. 6, a marginal striof glue 7a being applied to the member 3 a jacent the open end 8 of theinner member, so as to secure the outer member to the inner member atthis point, and thus form a bottom for the inner member, the relativepositions being indicated by Figs. 6 and 7.

Preferably, however, the bag is constructed as shown in Fig. 3. It willbe understood that the innei member is of the same dimensions as themember l and is laid thereon in position to be infolded by the endextension 3 and the gluing fiaps 2, with the flap 5 extending beyond thefolding line 4 of the outer member and lying upon the adjacentportion ofthe member 3. The glue 9 is then applied to the flap 5 and extendingslightly beyond, covers a narrow section at the folding end of themember 3. When the member is folded over on the member 1, the flap 5 isfolded over and adhesively secured upon the outer surface of the parts6, 7, of the inner bag, and also the glued section 9, of the part 3, isadhesively secured upon the parts 6, 7, just above the line ofattachment of fla 5. Finally the flaps 2 of the art 1, are fo ded overand adhesively secure u on the inner marginal edges of the outer agmember 3. These bags are substantially fiat when collapsed so as to beshipped knockeddown, and they may be opened up and filled with tobaccoor other similar commodities which can be economically handled inpackages of this character. In a bag thus formed, the seams of the outerbag are at the outer marginal edges, and the single side seam of theinner bag is at an intermediate point. This strengthens the articlestructurally, for the reason, that when the bag is opened up, the sidesof the two members are not. secured together coincidentally. Of course,this line of adhesive attachment is the part most likely to tear underthe strain of opening, and with this construction, if the outer memberstarts to tear along the lines of attachment of the flap 2, theadjacentportion of the inner member being integral along this line, will not beapt to tear, the one serving to reinforce the other.

Having described my inventien, I claim l. A bag formed of two blanksplaced together for folding, the outer member consisting of a blankfolded upon itself to form a bottom along the lines of folding, themeeting side edges of the blankV being secured together, and the innermember consisting of a blank folded upon itself transversely to the lineof folding of the outer blank, the meeting ends of the inner memberbeing secured together adjacent an integral section of the outer member,and the meeting edges of the outer member being secured togetheradjacent the integral sections of the inner member, substantially asdescribed.

2. A bag formed of two blanks placed together for folding, the outermember consisting of a blank folded upon itself to form a bottom alongthe lines of folding, one of the folding sections lhaving gluing flapseX- tending laterally beyond the adjacent edges of the opposingsections, and the inner member consisting of a blank folded upon itselftransversely to the line of folding of the outer blank, the meetingedges of the inner member being secured together Ito form a lateral seamadjacent an integral section of the outer member, and the gluing flapsof the outer member being secured 'to the opposing section of the outermember to form lateral seams adjacent integral sections of the innermember, substantially as described.

3. A paper bag consisting of two blanks placed together, the outer blankbeing folded upon itself to form a bottom along the line of folding, theinner blank being folded. upon itself and having its meeting edgessecured together on a hne transverse to the folding line of the outerblank, the inner bag being placed, within the outer bag,

means adhesively securing together said bags at the bottom, and meansSecuring tofA to the folding line of the outer member, said flap beingsecured upon one side of the inner member to form a bottom therefor,substantially as described.

5. A double paper bag composed of two blanks placed together forfolding, the outer member consisting of a blank folded upon itself toform a bottom along the line of folding and constituting the outer bag,the inner bag consisting of a blank folded upon itself and having itsmeeting edges secured together, the folding lines of the two blanksbeing substantially at right angles to one another, substantially asdescribed.

6. A doubleI paper bag consisting of two blanks placed together forfolding in one continuous operation, the outer blank being folded uponitself to form a bottom along the line of folding and constituting theouter bag, the inner bag consisting of a blank,

folded upon itself and having each end open, and having its side meetintogether, the folding lines o the two blanks being substantially atright angles to one another, substantially as described.

7. A flat paper bag formed from an outer blank of suitable papermaterial, and a lining blank of waxed paper, the outer blank comprisingabroad side and a narrow side with a. middle line of fold, and withlongitudinal score-lines for the broad side to form narrow securingflaps, the inner linin blank having transverse and longitudinascore-lines to coincide with the corresponding score-lines of the outerblank, and having wide securing side flaps to overlap when the bagisfolded and a narrow locking stripV to lock around the lower edge ofthenarrow flaps of the outer blank when folded.

In' testimony whereof, I have hereunto set my hand.

HENRY W. STUART.

edges secured-

